87 vett destroying clutch master cylinders [Forums - C4 Technical]

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istter1	87 vett destroying clutch master cylinders	#1
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	I went through hell with this there should have been no problem. Steve Quote: ttpfi wrote: 1996, LT-4, 383. 6 months ago, had the clutch master replaced. Last week, clutch started going to the floor and I had to pump up the clutch to get it home. I replaced the master, bled the system, bled the system and bled the system. Take it out for a drive and I get 2 miles down the road and the clutch peddle goes soft AGAIN. So my question is, replace the slave cylinder? This is frustrating. The slave was replaced a year ago. Posted on: Today 16:40 _________________ Only I can change my life. No one can do it for me. Carol Burnett Transfer So far in one year I have replaced 4 Clutch master cylinders. Bent the actuator rod. tightened up the place the pedal moves on. Now thinking about Swing pedals. Anyone have a suggestion? Istter1
	Posted on: 2011/7/4 21:44

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bogus	Re: 87 vett destroying clutch master cylinders	#2
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	Do you have any other mods? Of all the clutch problems with C4s, I have never heard of this one!!! Welcome to the Guru!
	Posted on: 2011/7/4 22:20
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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istter1	Re: 87 vett destroying clutch master cylinders	#3
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	This part is stock. Replaced slave cylinger and tubeing also. That is why I was looking at swing pedal. Don't know if there is one to fit this one.
	Posted on: 2011/7/4 22:35
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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bogus	Re: 87 vett destroying clutch master cylinders	#4
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	I appreciate that, what I was curious about was what parts of the drive line HAVE been modified.
	Posted on: 2011/7/5 2:08
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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istter1	Re: 87 vett destroying clutch master cylinders	#5
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	"the only parts modified are a c5 front and rear bumper are on this c4 and the vehicle has been lowered 1" it has 17" and 19 inch rims
	Posted on: 2011/7/5 4:46
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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bogus	Re: 87 vett destroying clutch master cylinders	#6
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	Sweet. That's what I was after. If you had an aftermarket clutch or some big monster motor... Now... why are you bending actuator rods??? That really makes little sense. It is a hydraulic system, so how in the hell is the fluid getting hard enough to bend metal! Could this be an install problem? I will find the pages for installing the master in a little bit.
	Posted on: 2011/7/5 16:04
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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istter1	Re: 87 vett destroying clutch master cylinders	#7
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	I agree it makes no sense. It is a simple job to install. Once we get a few vehicles out of the shop I am going to start on it again. I even looked in my Haynes repair Manual. I am that frustrated is why I am lookins at swing Pedals.
	Posted on: 2011/7/5 16:46
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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bogus	Re: 87 vett destroying clutch master cylinders	#8
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	Maybe these pages will help? Attach file: 1987CluchSlavePage1.jpg (215.23 KB) 1987CluchSlavePage2.jpg (163.32 KB)
	Posted on: 2011/7/5 18:23
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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istter1	Re: 87 vett destroying clutch master cylinders	#9
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Thanks for the pictures. More detail then what I had already. Finished up two other cars today will be working on the vett I hope by Friday. What do you do to attach that file to this post? This form has been a lot of help other problems I have had so far. Thanks for your time.
	Posted on: 2011/7/5 22:36
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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bogus	Re: 87 vett destroying clutch master cylinders	#10
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	Simply make a jpg or pdf and make sure it is under 1mb. When you open a box to reply or create a thread, you can upload from your own PC. Glad we can help!!!
	Posted on: 2011/7/5 22:57
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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istter1	Re: 87 vett destroying clutch master cylinders	#11
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Thanks figured it out. stupid sume times LOL
	Posted on: 2011/7/10 0:32
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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bogus	Re: 87 vett destroying clutch master cylinders	#12
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	what was wrong?
	Posted on: 2011/7/10 1:55
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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istter1	Re: 87 vett destroying clutch master cylinders	#13
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Old age and PTSD
	Posted on: 2011/7/10 2:30
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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bogus	Re: 87 vett destroying clutch master cylinders	#14
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	Ah, ok.
	Posted on: 2011/7/10 2:39
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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istter1	Re: 87 vett destroying clutch master cylinders	#15
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	The fly wheel had a lot of blue like it had been slipping. My parts guy is an old buddy and he is replacing the hydrolic system a complete clutch assembly and lines I am buying a new fly wheel. We will put it together next week and see what happens next. Thought we might try a different brake fluid next time.
	Posted on: 2011/7/10 2:53
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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istter1	Re: 87 vett destroying clutch master cylinders	#16
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Waiting on a part right now but will also be replacing rear main oil seal, transmisson 4+3 filter and melted plugs on the transmission. May have it done this afternoon. Attach file: IMG00116-20110711-0824.jpg (187.25 KB) IMG00119-20110711-0829.jpg (199.54 KB) IMG00122-20110711-0835.jpg (352.07 KB) IMG00117-20110711-0827.jpg (176.43 KB) IMG00118-20110711-0828.jpg (193.23 KB)
	Posted on: 2011/7/11 16:21

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istter1	Re: 87 vett destroying clutch master cylinders	#17
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Clutch works great now pulling the transmission and looking for a rebuilder or a rebuilt overdrive . $1400 From SK Speed. There goes my paint job for a while. LOL
	Posted on: 2011/7/13 18:23
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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istter1	Re: 87 vett destroying clutch master cylinders	#18
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Well runs great now. Pedal is were it should be. The guy at SK speed told me of some after market needle bearing for the over drive. With the brand new flywheel it is better than new. Teo different Shops including SK Speed told me it was best to shim the flywheel or save time and put in an OME new flywheel for some reason the corvette and camarrow had simular problems. First time In fourty years I have run into this. I will in time Everything is new clutch kit. hydrolics so if this one last 6 months I will become a beleiver. If any one wants a flywheel let me know maybe we can swap out for something
	Posted on: 2011/7/16 19:44

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bogus	Re: 87 vett destroying clutch master cylinders	#19
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	Keep in mind, getting parts and service on the 4+3 is getting dicey. You may want to consider a 5spd conversion at some point. TKO makes a very good one. Less complex, better driving and more power handling. Just say'n... I am glad the clutch is working as it should!!!!
	Posted on: 2011/7/16 21:10
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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istter1	Re: 87 vett destroying clutch master cylinders	#20
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Transmission from Corvette Central Attach file: transmission.odt Size: 20.62 KB; Hits: 245
	Posted on: 2011/7/17 1:08

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istter1	Re: 87 vett destroying clutch master cylinders	#21
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	I went through hell with this there should have no problem. Steve Quote: ttpfi wrote: 1996, LT-4, 383. 6 months ago, had the clutch master replaced. Last week, clutch started going to the floor and I had to pump up the clutch to get it home. I replaced the master, bled the system, bled the system and bled the system. Take it out for a drive and I get 2 miles down the road and the clutch peddle goes soft AGAIN. So my question is, replace the slave cylinder? This is frustrating. The slave was replaced a year ago.
	Posted on: 2011/12/21 0:40
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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istter1	Re: 87 vett destroying clutch master cylinders	#22
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Well here I go again you talk about something going wrong in the past and it reoccurs. I should have knocked on wood. Lost my hydraulics one block before my house. Lol this 4 month old system lasted longer than the others. The resivor is full of black stuff and the peddle this time slowly went down. Will check after work tomorrow to which failed this time? Master or slave or both. They are still under warrenty. Steve Any new ideas sort of hard to install wrong 5 times.
	Posted on: 2011/12/22 4:54

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istter1	Re: 87 vett destroying clutch master cylinders	#23
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Quote: Originally Posted by Ranger I had an interesting conversation with a SSCA race team crew chief yesterday about clutch fluid. Cliff Notes follow: (1) Fluid in the clutch hydraulics falls prey to the same adverse issues (heat and water) as fluid in the brake hydraulics. (2) Race team changes the clutch fluid at every opportunity, not less than daily, doing a full bleed, often involving several quarts. (3) Changing the clutch fluid aggressively is part of the routine for the C5R/C6R. (4) On street cars at normal operating temps, the clutch fluid in the actuator (slave) runs at no less than 230 degrees. Under launch and high rpm shifts, the friction involved produces fluid temps over 400 degrees. Not an issue for fresh fluid. But problematic is the fluid isn't fresh. (5) The actuator (slave) is at the lowest point in the clutch hydraulics. Therefore it collects by-products spawned by heat and water. If those aren't flushed regularly, issues will follow. (6) The clutch master cylinder cap is vented. When hot clutch fluid cools, air is drawn in and absorbed by the (brake) fluid. Black nasty clutch fluid is a sign of deterioration by heat compounded by corruption of water. Both combine to drop the boiling point of the fluid well below 400 degrees. The dirtier the fluid is the lower its boiling point. (7) He said we are smart to keep the clutch fluid clean. He said my protocol will work for street cars. But obviously, full bleeds are the race-car routine. (8) He said if the slave is full of debris, it takes many flushes to get it cleaned out. And sometimes it's just easier to replace the slave altogether. Ranger Quote: istter1 wrote: I went through hell with this there should have been no problem. Steve Quote: ttpfi wrote: 1996, LT-4, 383. 6 months ago, had the clutch master replaced. Last week, clutch started going to the floor and I had to pump up the clutch to get it home. I replaced the master, bled the system, bled the system and bled the system. Take it out for a drive and I get 2 miles down the road and the clutch peddle goes soft AGAIN. So my question is, replace the slave cylinder? This is frustrating. The slave was replaced a year ago. Posted on: Today 16:40 _________________ Only I can change my life. No one can do it for me. Carol Burnett Transfer So far in one year I have replaced 4 Clutch master cylinders. Bent the actuator rod. tightened up the place the pedal moves on. Now thinking about Swing pedals. Anyone have a suggestion? Istter1 This time we are going to try insulating the slave cylinder and tubing. I am going to change the Pre cats and keep a close eye on the fluid color. Any other suggestions Steve
	Posted on: 2012/1/4 19:21

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istter1	Re: 87 vett destroying clutch master cylinders	#24
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Well slave is full of fine rubber crap and the plunger is stuck about 2 1/2- 3" down. This slave was from NAPA the new one will be here friday. Lol John showed up I didn't have my stiches covered so they banned me from the shop again. Steve Attach file: slave.jpg (337.32 KB)
	Posted on: 2012/1/5 1:42

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BillH	Re: 87 vett destroying clutch master cylinders	#25
The Stig Moderator Reno 22702 Posts Member since: 2007/12/25 0:00	Quote: istter1 wrote: Well slave is full of fine rubber crap and the plunger is stuck about 2 1/2- 3" down. Steve Old hoses.
	Posted on: 2012/1/5 1:47
	_________________ Every man dies but not every man lives.
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istter1	Re: 87 vett destroying clutch master cylinders	#26
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Hose and master and slave replaced at same time twice now. We will replace all 3 again.They all last about 4 to 5 months before one of them goes bad. Maybe this time will work. Since I am banned from touching anything in the shop until I get my stiches out not sure when it will be done. Sad news at the air show I hear Bill. Steve
	Posted on: 2012/1/5 3:38
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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BillH	Re: 87 vett destroying clutch master cylinders	#27
The Stig Moderator Reno 22702 Posts Member since: 2007/12/25 0:00	Quote: istter1 wrote: Sad news at the air show I hear Bill. Steve I was supposed to be there that day. They announced yesterday that the races will continue in 2012.
	Posted on: 2012/1/5 14:16
	_________________ Every man dies but not every man lives.
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istter1	Re: 87 vett destroying clutch master cylinders	#28
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	It is like any other race the bad part when they pay the ultimate price. Steve
	Posted on: 2012/1/5 14:48
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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istter1	Re: 87 vett destroying clutch master cylinders	#29
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Well up and running again. We did some modification to the clutch pedal bushing. It was shot. We replaced it about 6 months ago. When we removed the old plastic bushing and set it down on the table in the shop there was a Brash bushing that looked so much like the plastic one from the vett. We did a little grinding on it and drilled it out a bit and it fit perfect. Now when you pushed down on the pedal the shaft did from the master went in straight every time. We had bent a push rod shaft on the master about a year ago. The play and slop was now stabilized and everything may work fine this time. The slave was a bit of a pain to bleed this time but worked fine when we bleed it through the master, it improved. Still some air in the system but not a lot. Drives fine. Will bleed it again next weekend. As slaves can be a pain in the butt and easy the next day. http://corvettespecialty.com/corvette ... brake-pedal-pivot-bushing Got to have it ready for school monday, as it is the best looking car on Campus. Lol I can't impress the femal teachers but the gets more looks then me. Steve Attach file: 87 vett brake and clutch ped.jpg (33.62 KB) bushing.jpg (16.16 KB)
	Posted on: 2012/1/9 0:24
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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Matatk	Re: 87 vett destroying clutch master cylinders	#30
Webmaster SW Chicago Burbs 22803 Posts Member since: 2008/1/7 0:00	Good fix on the bushing.
	Posted on: 2012/1/9 2:06
	_________________ 2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP
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istter1	Re: 87 vett destroying clutch master cylinders	#31
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Ok where did the edit go. I am a little loaded on pain killers and that was poor communications.Where are the icons or better yet where do we find them at. Quote: istter1 wrote: Well up and running again. We did some modification to the clutch pedal bushing. It was shot. We replaced it about 6 months ago. When we removed the old plastic bushing and set it down on the table in the shop, there was a Brass bushing from a VW, that looked so much like the plastic one from the vett. We did a little grinding on it and drilled it out a bit and it fit perfect. Now when you pushed down on the pedal the shaft from the master went in straight every time. We had bent a push rod shaft on the master about a year ago. The play and slop was now stabilized and everything may work fine this time. The slave was a bit of a pain to bleed this time but worked fine when we bleed it through the master, it improved. Still some air in the system but not a lot. Drives fine. Will bleed it again next weekend. As slaves can be a pain in the butt and easy the next day. http://corvettespecialty.com/corvette ... brake-pedal-pivot-bushing Got to have it ready for school Monday, as it is the best looking car on Campus. Lol I can't impress the female teachers but the gets more looks then me. Steve ( Boy do I feel stupid. Found it.
	Posted on: 2012/1/9 2:45
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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istter1	Re: 87 vett destroying clutch master cylinders	#32
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Well going to give the entire clutch system this weekend. Running over to Pismo Beach. Lots of curves straight aways and nice weather. Lots of start and stopping while crusing the streets. Steve
	Posted on: 2012/1/13 23:20
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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NorCalVette87	Re: 87 vett destroying clutch master cylinders	#33
Guru Newb cocord,ca 12 Posts Member since: 2012/1/3 8:05	Anybody know what size bolt holds the slave cylinder n place? I would jack it up n look my self but I hope Someone here knows off the top of there head.
	Posted on: 2012/1/15 20:46

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istter1	Re: 87 vett destroying clutch master cylinders and slaves	#34
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Well back to square one again. I need suggestions of why this keeps happening. Nothing wrong with replacement parts used every brand made. I replace master. slave and line each time. Not even a complete fool could mess up this many times so this is something not the norm that is causing this problem. Is there another system that could be installed to replace this one? Any and all ideas are welcome. Finished installing the last system in Jan this year. new tranny and new clutch new flywheel. Same before replacement. Will be at shop this weekend to take it apart again this weekend and see which failed this weekend. System full of fluid. Attach file: IMG00341-20120307-1559.jpg (345.10 KB)
	Posted on: 2012/3/8 1:46
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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Matatk	Re: 87 vett destroying clutch master cylinders	#35
Webmaster SW Chicago Burbs 22803 Posts Member since: 2008/1/7 0:00	Wow. I wish I knew about those systems so I could give you some suggestions. Keep us posted.
	Posted on: 2012/3/8 2:05
	_________________ 2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP
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istter1	Re: 87 vett destroying clutch master cylinders	#36
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Quote: Matatk wrote: Wow. I wish I knew about those systems so I could give you some suggestions. Keep us posted. It's odd going back 10 years on the service record. Every one that has owned her has had clutch transmission or slave and master cynlinder clutch problems with it. Parts are still on warrenty
	Posted on: 2012/3/8 2:13
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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istter1	Re: 87 vett destroying clutch master cylinders	#37
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	The fluid is dark black it was black within a week after everything was replaced. Below is a quote fron another site about the color and crap in the fill cup. Quote: Originally Posted by Ranger I had an interesting conversation with a SSCA race team crew chief yesterday about clutch fluid. Cliff Notes follow: (1) Fluid in the clutch hydraulics falls prey to the same adverse issues (heat and water) as fluid in the brake hydraulics. (2) Race team changes the clutch fluid at every opportunity, not less than daily, doing a full bleed, often involving several quarts. (3) Changing the clutch fluid aggressively is part of the routine for the C5R/C6R. (4) On street cars at normal operating temps, the clutch fluid in the actuator (slave) runs at no less than 230 degrees. Under launch and high rpm shifts, the friction involved produces fluid temps over 400 degrees. Not an issue for fresh fluid. But problematic is the fluid isn't fresh. (5) The actuator (slave) is at the lowest point in the clutch hydraulics. Therefore it collects by-products spawned by heat and water. If those aren't flushed regularly, issues will follow. (6) The clutch master cylinder cap is vented. When hot clutch fluid cools, air is drawn in and absorbed by the (brake) fluid. Black nasty clutch fluid is a sign of deterioration by heat compounded by corruption of water. Both combine to drop the boiling point of the fluid well below 400 degrees. The dirtier the fluid is the lower its boiling point. (7) He said we are smart to keep the clutch fluid clean. He said my protocol will work for street cars. But obviously, full bleeds are the race-car routine. (8) He said if the slave is full of debris, it takes many flushes to get it cleaned out. And sometimes it's just easier to replace the slave altogether. So what is causing this build up in my systen so quickly?
	Posted on: 2012/3/8 14:18
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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jhammons01	Re: 87 vett destroying clutch master cylinders	#38
Senior Guru 1044 Posts Member since: 2007/10/29 0:00	Are you using original GM parts?? I know you mentioned NAPA, but they have had issues with the o-ring inserted backwards in the past...... There is a GM wholesale place on Gothard Street in Huntington Beach. I know you are in Bakersfield, but if you are a shop....or you can present yourself as a "jobber" they'll sell to you out the back door type thing and the parts are just as cheap as NAPA non-original parts. I'd try these as the last time I did the NAPA route, the Slave they gave me wouldn't mate up with the GM hose without modification, the original GM Slave mounted right up.... So, I took the NAPA slave back and got my money back..... Once I found this GM place, I've not had a hard time finding any parts. And your 4x3?? Orange County Transmissions in Costa Mesa did mine....He didn't need to rebuild the DNE Overdrive, but he took it apart and replace the gaskets.....He did rebuild the 4spd portion, he had it done in "one" working day...... I dropped it off on Monday mid morning and Tuesday afternoon he was done......$750....
	Posted on: 2012/3/8 15:14

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istter1	Re: 87 vett destroying clutch master cylinders	#39
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Have used all gm parts before. may go that route again. thanks
	Posted on: 2012/3/8 15:25
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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jhammons01	Re: 87 vett destroying clutch master cylinders	#40
Senior Guru 1044 Posts Member since: 2007/10/29 0:00	^^There is something really odd about your situation.... If you take a Master, Slave and hose and replace them all at the same time, there is NO WAY an issue from the old components could transfer to the new......I mean, if dirt an grime are to blame, if take all three components out...there is no way to cross contaminate
	Posted on: 2012/3/8 15:47

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istter1	Re: 87 vett destroying clutch master cylinders	#41
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Quote: jhammons01 wrote: ^^There is something really odd about your situation.... If you take a Master, Slave and hose and replace them all at the same time, there is NO WAY an issue from the old components could transfer to the new......I mean, if dirt an grime are to blame, if take all three components out...there is no way to cross contaminate We have replaced all three the last 4 times???????
	Posted on: 2012/3/8 16:44
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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Matatk	Re: 87 vett destroying clutch master cylinders	#42
Webmaster SW Chicago Burbs 22803 Posts Member since: 2008/1/7 0:00	Didn't we sugegst before that heat could be causing the problems? Wondering if extreme heat is damaging the fluid and seals.
	Posted on: 2012/3/8 19:24
	_________________ 2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP
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istter1	Re: 87 vett destroying clutch master cylinders	#43
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Quote: Matatk wrote: Didn't we sugegst before that heat could be causing the problems? Wondering if extreme heat is damaging the fluid and seals. We talked about heat from the cats and the way the line is routed. don't know if putting new pre cats on or a different heat shield. The fluid is black within a week I flush out the fluid and repeated it once a week still turned black. still went out
	Posted on: 2012/3/8 19:33
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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istter1	Re: 87 vett destroying clutch master cylinders	#44
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Quote: jhammons01 wrote: Are you using original GM parts?? I know you mentioned NAPA, but they have had issues with the o-ring inserted backwards in the past...... There is a GM wholesale place on Gothard Street in Huntington Beach. I know you are in Bakersfield, but if you are a shop....or you can present yourself as a "jobber" they'll sell to you out the back door type thing and the parts are just as cheap as NAPA non-original parts. I'd try these as the last time I did the NAPA route, the Slave they gave me wouldn't mate up with the GM hose without modification, the original GM Slave mounted right up.... So, I took the NAPA slave back and got my money back..... Once I found this GM place, I've not had a hard time finding any parts. And your 4x3?? Orange County Transmissions in Costa Mesa did mine....He didn't need to rebuild the DNE Overdrive, but he took it apart and replace the gaskets.....He did rebuild the 4spd portion, he had it done in "one" working day...... I dropped it off on Monday mid morning and Tuesday afternoon he was done......$750.... Busy day at school. My budy has a shop i work on and he gets me parts. We remover the 4+3 and put in a Keisler transmission 600/ the best thing I have done for my vett. http://www.keislerauto.com/Keisler_Auto/Keisler_Engineering.html Easy install 5 year warrenty delevired on time plenty of tech help. I wish I could gut the pre cats but that would involve replacing the tubes and it may look like I did it my self . You know california. It is smog time right now test only. I am fairly certain it is a heat issue. one reason I would like to find swing pedals that would allow me to reroute lines.Would not be an easy job. I want options that will work. No idea what that may be . lol
	Posted on: 2012/3/8 22:42
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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Matatk	Re: 87 vett destroying clutch master cylinders	#45
Webmaster SW Chicago Burbs 22803 Posts Member since: 2008/1/7 0:00	Quote: istter1 wrote: I am fairly certain it is a heat issue. one reason I would like to find swing pedals that would allow me to reroute lines.Would not be an easy job. I want options that will work. No idea what that may be . lol I honestly don't know how the lines are routed. What about getting new longer lines made that route differently?
	Posted on: 2012/3/8 23:41
	_________________ 2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP
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jhammons01	Re: 87 vett destroying clutch master cylinders	#46
Senior Guru 1044 Posts Member since: 2007/10/29 0:00	I didn't see where you had put a Keisler in there.....Did you put that tranny in there or did the PO?
	Posted on: 2012/3/8 23:43

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istter1	Re: 87 vett destroying clutch master cylinders	#47
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Quote: jhammons01 wrote: I didn't see where you had put a Keisler in there.....Did you put that tranny in there or did the PO? "" I honestly don't know how the lines are routed. What about getting new longer lines made that route differently? [color=990033]Just changed the fulines after they broke what an easy and awsome job. Thanks to the help here. Will look into a new route. We were looking at how to build a heat shield to deflect the heat from cats.[/color] My cats are old but work fine. Question is there much of a difference in the heat range of new cats vs. these old ones?With the DN 3+4 geeting hard to gets parts for . People here (Andy) suggested I check Keisler out. Was a very wise choise. love this transmission!!! I bought the 600 with 2.87, 1.98, 1.34, 1.o, 064.Was easy to install and a lot more room in the slot. In 5th at 80 rpm are 1900+ Really cruises. Attach file: box1.jpg (3.33 KB) box2.jpg (4.01 KB) dn4+3.jpg (235.93 KB)
	Posted on: 2012/3/9 1:05
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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jhammons01	Re: 87 vett destroying clutch master cylinders	#48
Senior Guru 1044 Posts Member since: 2007/10/29 0:00	So, this weird situation has existed throughout two separate transmissions....
	Posted on: 2012/3/9 4:06

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istter1	Re: 87 vett destroying clutch master cylinders	#49
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Quote: jhammons01 wrote: So, this weird situation has existed throughout two separate transmissions.... And Replaced 2 clutchs turned flywheel and put a new flywheel on it
	Posted on: 2012/3/9 4:12
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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istter1	Re: 87 vett destroying clutch master cylinders	#50
Elite Guru Bakersfield Ca 2336 Posts Member since: 2011/7/4 21:23	Question about Master slave throw out http://www.ebay.com/itm/BRAND-NEW-INT ... p=mtr&hash=item23190a9fcb Could this one be used with Master cylinder stock corvette. how much pressure is required to operate one of these? http://cgi3.ebay.com/ws/eBayISAPI.dll ... userid=gripforce-clutches I am e-mailing this company in Brea Ca. to see what they say about their slave mounting up to my transmission an what master is needed to operate the slave. Doesn't hurt to ask I am using a different transmission then 4+3 Keisler has a ring to put their model but have not tried this system with this system no Idea if it will with 87 http://www.keislerauto.com/components ... 673782d7822dccb10ae56.jpg Anyone fimular with these systems
	Posted on: 2012/3/9 4:39 Edited by istter1 on 2012/3/9 5:19:25
	_________________ Only I can change my life. No one can do it for me. Carol Burnett
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